Open to opportunities

Lok Sai Vajja

@loksaivajja

Message

I build fraud decisioning and data pipelines that reduce losses and customer friction.

United States

Message

What I'm looking for

I'm looking to build trusted fraud and data solutions where I can improve decisioning, reduce customer friction, and partner with analytics, product, operations, and risk teams on measurable business outcomes.

At PTC, I develop SQL-based fraud strategy rules and decision logic for payment and onboarding workflows, reducing false positives by 25% and improving fraud capture by 30%.

I've partnered with risk analytics, data science, compliance, and legal teams to translate risk scores into operational controls, improve model precision through champion/challenger testing, and strengthen synthetic-identity control documentation.

Previously at Wipro, I delivered ETL solutions, integrated REST APIs with Python, optimized SQL reporting performance, and improved cross-system data consistency through systematic testing and reconciliation.

Experience

Work history, roles, and key accomplishments

Current

Fraud Data Analyst

Current

PTC

Jan 2025 - Present (1 year 7 months)

Developed fraud strategy rules and decision logic using SQL to detect payment fraud patterns, reducing false positives by 25% across onboarding workflows. Analyzed fraud patterns and loss exposure from transaction data in PostgreSQL, identifying account takeover signals that improved fraud capture by 30%.

SQL PostgreSQL Fraud Strategy Risk Analytics Data Analysis Champion Challenger Testing Dashboarding Compliance